Lithium-ion highly conducting 100Li₃PS₄-50LiI-xLi₃PO₄ (0 ≤ x ≤ 20 mol%) solid electrolytes were successfully prepared by liquid-phase synthesis using ethyl propionate as the reaction medium. Li₃PO₄ could be inserted into the Li₃PS₄-LiI structure (up to x = 20) without any noticeable segregated peak in the resulting X-ray diffraction patterns. ³¹P NMR revealed the formation of PO₂S₂ and POS₃ units, which confirmed that Li₃PO₄ reacted with Li₂S-P₂S₅ system to form Li₃PO_4-xS_x. Solid electrolyte with x = 10 exhibited the highest conductivity of about 8.5 × 10⁻⁴ Scm⁻¹ at room temperature.

以丙酸乙酯为反应介质，通过液相合成成功制备了锂离子导电性高的100Li ₃ PS ₄ -50LiI- x Li ₃ PO ₄（0≤x≤20 mol％）固体电解质。Li ₃ PO ₄可以插入Li ₃ PS ₄ -LiI结构中（最多x = 20），而在所得X射线衍射图中没有任何明显的分离峰。³¹ P NMR揭示了PO ₂ S ₂和POS ₃单元的形成，这证实了Li ₃ PO ₄与Li反应₂ S-P ₂ S ₅体系形成Li ₃ PO _4-x S _x。x ＝ 10的固体电解质在室温下表现出约8.5×10 ^-4 Scm ^-1的最高电导率。